Say hello to The Adjustable Backpack B3. The first multi-size backpack ever.
ONE BACKPACK FOR ALL YOUR ADVENTURES
The Adjustable Backpack B3 is a small, medium and large backpack all in one. Using the same adjusting mechanism as our classic A10, B3 has the ability to transition between 31L, 46.5L, and a 62L capacities, making it the only backpack you need. There is no other backpack in the world with this size versatility.
INNOVATIVE, SIMPLE TO USE
B3 uses a simple system that is extremely quick and easy to use. There is no other backpack in the world that can so effortlessly expand or contract.